Brake.



F. W. ADSIL BRAKE, APPLLCATION FILED fun: I]. ms.

Patnted Nov. 20, 1917.

2 ISHEETSSNEET I.

F. W/ADSIT.

BRAKE. APPLICATION FILED JUNE 17.1915.

1 24:6,831 I Patented Nov. 20, 191?.

' 'To allwhom comem:

-UNITED STATES PATENT OFFICE.

FRANK W. ADSIT, OF CHICAGO, ILLINOIS BRAKE.

Farms W. Ansir, a States, residing at Be it known that I citizen of the United Chicago, in the county of Cook and State of.

Illinois, have inrented certain new uml use ful Improvements in Brakes, of which the following is a; specification.

My invention relates to improvements in vehicle brakes and has especial reference to brakes energized by electricity to cause braking association of a non-rotatable memberb ol cnrrent to an electromagnetic brake to stop the rotation of the driven member, so

constructed and arrenghd thatthc brake cannot be energized until after the said driving and driven members have been disconnected. my "invention is to mount a rake or this cneral Another and more cific object of character, on an automobile, prefera 1y one for each of the traction wheels of the chassis,

and to automatically control the c'urrent for.

I ener izing thebrakes-by the clutch-controlling ever.

nother ob3ect of my invention is to pro-.-

vide an electromagnetic brake, for an auto-.

mobile, which may be putin operating con energizing it with an electric curwhich is independently operable (lition by rent out by manual means with the usual foot-.01 hand pedal or lever-by a plication' of pres-,

sure tiercto,.said manna operable means bein supplemental to and independent of the e ectro-magnetic means for applying the brake.

l i i Other and further objects of my invention "wiu' become readily a'pparcnt to persons thereof.

Fig. 4 is an enlarged longitudinal section taken on line4-4-o' Fig.

Fig. his a diagram 0 circuit.

Specification of Letters Yatenti P'iiSGlltGtlNOV- 20 Application filed June 17, 1916. Serial No. 104,203. I f v In all the views the same reference charactors are employed to indicate similar parts.

10 and 11- are the side members, of thelrume of the chassis, 12.nnd 13 are the transverse sills or cross members connecting the side members to ether. 14-9-14; are the springs connecting t ie rear axle housing 15 to the frame members 10 and 11', respectively. 16-16 are the traction wheels of the vehicle connected tothe respective ends.

of the rotatable axle 17, which is rotatable within the fixcd'axle housing 15. 18 is theusual typical foot lever for, connectin and disconnecting the clutchmembers oi the usual clutch that is clnployccbto connect the driving engine,not sh0wn, 'with the power shaft 19, as usual in (lefl'ibcs o'f this character. The lever 18 is [)H'OtfltlyilS at 18',

andis held in retracted position tonormally engage the clutchmeinbcrs, by a spring'flfl. 21 is the foot board of an al|to1nohile'.- The casing 22 contains the usual dillcrential gear whereby the power shaft 1.9 is connected to 'the' rotal'able axle 17. As so far describedthe parts are similar to automobiles of con- 4 ventional type.

Secured to the wheels 16, preferably to the. hubs 16 is a renewable ring or plate 23 of ma ctic material, such as cast iron, steel further contracted end of which constitutes a bearing for the wheels 16'.

Fixed to the axle housing 15 and to the spring 14, is a sleeve 25 enlnr cd into a cup shaped part 26, that is provi ed with a slot in opposite diameters, as at 27, and Yided with a verticahi'lateral'ly-exten in arm 28. Each of the springs-14 is held contact with the stationary axle housing 15 hy.a. stirrup 29, which engages an extension 30 from the sleeve 25.,- The end of the arm 28 is' slotted, as at 81, for a pivoial link 32 to permit axial movement of the brake me'm-' her 34. A cup-shaped casting, or brake 'mrinhrr 34, having an inner sleeve 35. is freely slidnhle upon the reduced end-11$v of the axle housing 1 5. The sleeve or 'hub' 35, of the member 34 enters the center. hereof the disk 23. \Vithin an annularchamber 3.6,-

and which is internally bored, as

11b an annular part '38,.of the, castin 34.-}.Se-. cured to the-part 38 is a rcnewab ei wearing plate, or fiat ring 39, which is adapted for frictional contact with the wearing plate or flat ring 23 secured to the hub of the wheel 1G,-"when the slidable brake member or casting 34 is bodily moved along the axle hous- "-ing 15. Projecting radially from the part '34 are diametrically disposed l,1igs=4O with-- in the notches 27 of the non-rdtatable part 26. These lugs engage the part 2 which is fixed to the axle housing 15, and revents the part 34 from rotating. When the coil 37 is energized, by a proper current of electricity, the magnetic circuit produced by the coil is completed through the hub 01' sleeve which enters the aperture 24 and is in close approximation to the' inner surface of the plate 23 bounding the aperture 24, and through the wearing plates 23 and 39 and through the annular plate 38, thus drawing the part 34 up toward the wheel 16 so that the wearing plates 23 and 39 will, make actual contact producing friction between the plates 23 and 39 sufficient to stop rotation of the wheel 16.

Projecting laterally from the brake member 34, and through an aperture in the part 26, is an arm 41 to which is connected a link 42 which with another similar link connected to a similar part associated with the o posite wheel constitutes a toggle, where y the plates 23 and 39 may be mechanically and forcibly pushed into actual contact to manually apply the brake.

A transverse shaft 43 has bearings in the side members 10 and 11 ofthe frame and carries an arm 44 that is connected by a rod 45 with the two ends of the members 42. Connected to the shaft 43 is another arm 46 -which in turn' is connected to a hand, or

foot-operated lever 47, by a rod 48, as at 49. The lever 47 is pivoted to a stationary'part 50, as at 51. When thelever 47 is pulled rearwardly motion is transmitted through the rods 45 and 48,to the toggle members 4242 which are thereby straightened out into substantially a common transverse plane thus causing movement. of the brakememr bers' 34, on the axle housing 15, until the wearing plates or rings 23 and 39 make frictional contact, one with the -other, thus, applyin' the brake equall on both wheels, attache to a common ax e housing.- The rod 45 is provided, on its rear end, with a strap 52 throu h which a belt or rivet 53 passes and whic also passes through the approximate ends of the toggle members 42. Now referring to Fig \5, the two coils 37 are connected in para] el, one end of which, 60, is grounded to the frame, as at 61, the other ends 62' and 63' being connect-ed. t

ether, as at 64, -and by awire 65, to the attery B, as at 66. The other terminal 67 of the battery is connected to a rheostat R by a wire 68'. A hand 0 erated controlling switch 69 is located t is part of the circuit for the purpose of opening the brake circuit when desired.

The clutch operating lever 18, carries an 11112170 which is grounded t0 the frame, as at The clutch=contro1ling lever 18 is shown in position, in Fig. 5, inwhich it is placed by the actuating sprin is connected to the sha t 19. When the lever 1.8 is pushed forward, by application of pressure by the foot of the operator'to disco'nnect the clutch, the arm 70 is thereafter brought into contact with the first button 72 of the rheostat Rto energizethe electric brake member. Further movement of-the lever 18, and thereby the arm 71, over the contact buttons 72 cuts out the resistance coils 73, one after another thus increasing the current that will flow through the brake coils 37 thereby gradually increasing the magnetic attraction between the wearing plate 23, secured to the wheel 16, and the wearing plate 39 secured to the axially movable member 34, thus avoiding too su'dden application of the brake to the vehicle.

When the foot lever 18 is released, the circuit is just as gradually opened by the inclusion of the resistance coils 73, one after another, thereby reducing the current be.- fore opening the circuit, after which the clutch members, for connecting the engine to the running gear of the vehicle are placed in operative connection.

A switch 69, for o ening the brake circuit may be employed, w en it is not desirable to apply the electric brake. When the brake has been set by the electric action referred to, the frictional engagement of the parts may be further increased by the ap lication of the toggle joint, consisting of t e members 42 -42, by movement of the hand lever 47, or if it is desirable to usethe mechanical brake alone it may be operated quite independently of the electrical bra'ke, ina man-.

ner plainly obvious. I

Having described my invention, what I claim is 1; An automobile brake comprising a magnetically susceptible member carriedby a wheel of the chassis; a relatively non-rotatable member, said members axially movable with respect to each other; electric means to magnetically energize said. brake members,

20 when the engine I to bring them into frictional. engagement,

and a supplementary mechanical means to effect frictional engagement .between said brake members independently of the magnetic means.

2. In combinati ing lever of an automobile chassis,-of an .on with the clutch-Operat- I electro-magnetic brake comprising a brake member of magnetically susce tible material carried by a wheel of the c assis; a relatively non-rotatable brake member, of similar material, for operative association with posite wheels of a pair of wheels of the taupe! the first mentioned member; electric means;

for frictional engagement with the first mentioned member; electric eans for energizing said brake members; a rheostat for in clusion in circuit with said ener 'zable brake member, controllable by said 0 utch-operating lever after said clutch members are separated thereby. r

4. In combination with an automobile chassis; a brake member of magnetically susceptible material connected, one each to opposite wheels bf'a pair of wheels of a chassis; an axially-movable, magneticall susceptible, non-rotatable member for bra ing association with each wheel member a source of electric current to magnetically energize said members to cause braking action therebetween and mechanical means for forcing said braking members into mutual contact to stop rotation of said wheel.

'5. In combination with an automobile chassis; abralce member of magnetically-susceptible material connected, one each to opchassis; -an axially -movable magneti chassis; an axially-movable magneticallr susceptible non-rotatable member for bra ing" association with each wheel I a source of electric current to magnetica y energize said members to cause braking action therebetween; a toggle connection between the axially movable members to force them outwardly into contact with the respective wheel members when the to lo is straightened and a manually operable ever for controlling said toggle. I

6. In combination with an automobile chassis; a'brake member of magnetically susceptible material connected, one each to opposite wheels of apair of wheels of the callysusceptible non-rotatable member for frictional engagement with each said wheel member; a source of electric-current to magnetically energize said members to bring them into frictional contact enga ement an manually-operable means to. in e endently move said members into frictiona engagement or to supplement the action of sa d magnet1c means.

In testimony whereof I hereunto set my hand in the presence of two subscribing witnesses.

FRANK W; ADSIT.

In the presence of STANLEY W. 0001:,

Man! F, ALLEN.

member 

